Traction wheel



Nov422, 1 932. I J. L. HECHT v TRACTION WHEEL Filed Sept. 18. 1950.

V traction cleats detached,

' intervals around the rim, as shown best in Patented Nov. 22, 1932 UNITED STATE if JOSEPH L. monitor DAVENPORT, IOWA,-ASSIGNOR T FRENCH a; iincrrr, -INCOBPORATED, A CORPORATION or IOWA? 1 v 'rRAo'r'IoN WHEEL,

Application filed September 1s, 4930. Serial no.4sa7o9.

This invention relates to traction wheels, and hasfor its object the production of a wheel of light,'stro'ng, anddurable construc tion, and in which the traction cleats will" be very firmly fastened to the rim of the wheel without danger of looseness or displacement under the severe stresses to which such cleats are subjected in the practical operation of n the wheel.

With these and other objects in view, the inventionconsists of the improved construction and arrangement of parts, which will be described in detail in the specification to'follow, the novel features of which will be set forth in the appended claims. t I

In the accompanying drawing II Fig. 1 is a side elevation of a portion of a traction wheel having my invention embod iedtherein; II

Fig. 2 is a side elevation on an enlarged scale of a portion of the rim of the wheel,

and a traction cleat applied thereto;

Fig. 3 is avertical sectional elevation of thesame; and

Fig. 4 is a vperspective view of oneof the Referring to the drawing V The type of wheel sh wn by way of exam ple as embodying the invention, comprises a rim member 1 in the form of an annular plate I I I rib and groove of the bracket :lation to thenotch inthe-plate. 7," are such. in

presented edgewise to the ground, a 111152,

and spokes 3 connected at their ends respec-: tively with the hub and rim. This rim, in

order to strengthen and reinforce it, is formed with a circumferential corrugation, presenting a circumferential groove 4 in one side, and a corresponding rib 5 on the other side; and this groove, is, in accordance with the invention, utilized to furnish seats for traction cleat elements 6, which are applied at Fig. 1. I i l The traction cleat elements consist each, as shown in Fi 4, of a traction cleat proper, in the form oi a plate 7, and an integrally connected bracket portion 8 extending inwardly from the inner edge'of the plate near one end thereof, and disposed in a plane at right angles to the plane of the plate, so

that whenthe bracket is fastened to the side extend transversely 'ofthe rim, seats to act with the usual tractive effect-. 1

To adapt the cleat elements tobefirmlyifk ii I and rigidlyfastened totherimpthe' plate 7 I is provided in its inner edge at oneside of thebracket 8, withfa notch or recess9 of j a'form whiohwill receive and seat around -theoute'redge of'the rim plate and the V brack'et'8'is formedwith a circumferential corrugation, presenting at one side a rib 10 a to seat in the grooved in the rim plate, and on the other side a corresponding-groove 11;,

which grooved andribbed portions of the brackets and rim are formed with rivetholes extending transversely therethrough to receive fastening rivets l2, by:.which the trac tion cleat elements are secured tothe'rim. M

From the vforegoing description, it. will be understood that the groove in the rim serves as sockets or seatsfor the bracket portions of the traction cleat elements, the ribs'or -proituberant portions of said brackets extendin H 7 into said groove in the rim, while their outer f edge ofcthe. rim extends into the notches in the plates7, whereby an' interlocking engage- 1118111, of the traction cleat wheelirimis secured.)

elements witlir the I I The form and contour of the '8 0 respect to theshape ofnt'he contacting faces that when the bracket is fastenedto' its'seat on the rim by the heading-down of thefasten-r 5 f l I 1ng rivets, the tractioncleat element, will be drawn inwardly slightly, whichfaction will ance between the wall of theinotchIQ anfdthe side face of the rim,'whichclearance will per- V mit of the slight inwarfd movementof the j cleat in 'thefinal fastening of thsame toits seat. "The corresponding contours .offxthe ,bracket8 andthe' grooved sid'e offthe rim plate" are so drawn,'-thatywhenl f r d i 9100 and rim, in re= gence between them, starting from the peripheral seat portionrand increasing in the direction toward the hub, just enough to be able to forcibly spring the bracket over the 'wheelrim, as indicated by the dotted line in ,Fig; 3. When the rivets are-driven in, the

corrugated part of the bracket is forced into seat 4, laterally as well slightly radial-1y partly through the draft on the rivet-hole portion, said bracket portions of the several toward the hub, until the bottom of the Y recess?) tightly abuts the peripheral edgeof a the annular plate 1.

It will beunderstood,that, sofar the seating of the ribbed brackets in a groove in the rim-is concerned,

-. discontinuous,

, to the location of the cleats.=

a change of the; detailed fo ment of' the. parts 'is-comprised within the it isnot necessary that the groov'e in the rim be acontmuous one, since all of the advantagesof the firm connection of the traction cleat elements could "bereahzed if the groove 1n the rim were made or at intervals corresponding.

-Therefore, such rm and arranges limits of the invention; and it"will be understood that other and various-changes such as "would suggest themselves to the skilled mechanic, may bermade without departing from the 'limits'of the invention; and-further,

. thatthe invention is not limited-to any par- I ticular form or construction of theparts, ex-

cept in so far as such limitations. are speci- I i has been duly signed by: i I i p 7 JOSEPH I- IEGHTL fiedin the claims.

- Having thus'described my invention, what I claim is: I r l 1. Ina traction wheel, the combination of -a rim,'traction cleatsapplied thereto and con- "sisting each of a bracket against one side 7 portion seated ofthe .rim,'and a connected 'cleat portion seated-against theouterperipheral ed-geof' the rim, and meansv for fasten- Y proper.

and a corresponding to serve as a seat for ,tr'actloncleat-s, traction the latter will be seated in the recesses combination of v anda corresponding groove in :the other side to serve as a seat for traction cleats,'traction cleats, each comprising a cleat proper formed in its inneredge with a' re'c-ess to rec'elve the outeredge o'fthe rim, and a connected bracket and rivets extendingthrough the rim and brackets to their'seats, with the outer edgeof the'rlm extending insaid recesses in the zcleats 4. 'In a a rim coinprlslng an annularplatepresented traction wheel, the combination of :Clea'ts being formed on one side with ribs seated respectively in the groove in the rim,

bracket portions of the cleats to hold the V edgewise ito'the ground and provided withia circumferential strengthening rib 0 m side, groove n the other side -cleats,each comprising'acleat properanda tions of the several cleats being formed on and bracket portionsof the cleats to holdthe brackets to theirsea'ts.

In testimony whereof, this specif cation ingth'e bracket portions to, the rim, the :con- 5 w I tacting surfaces of said bracket portions and jrim being of such relative formthatwhen; i V drawn together inthe fastening operation, f" 'the cl' eatrwill be forced simultaneously in'ja' V radial as well as af'la'teral.directioninto'firm contact with the rim.

' '2; In a traction heel, the combination with a rim formed with a curved seatforthe '7 attachment of "traction cleats, oftraction cleats comprising each'a bracket formed with" a curved protuberant portion adapted to ex- *tendin' the seat on the rim, and a connected cleat portion proper 'providedwith a recess to receivetheperipheral edge oft-he"rim,"and

V m'e'ans for'fastening the protuberant portions 1 a V v .tac'ting faces of said'seat andprotuberant of thebrackets in the seat'in the rim, the conportionsi'beingi-oifsuch relative formthatin v I the operation of fastening thepartstogether, s. V

cleats willibe'j drawn radially I inwardly against the jperipheraledgeof the rimand connected bracket port-ion, said bracket 'porcan. 

